<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title></title>
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>

<body>
    <div id="app">
        <div>{{val}}</div>
        <input type="text" :value="val" @input="vModel">
    </div>
    <script>
        new Vue({
            el: '#app',
            data: {
                val: '中国河南省南阳市'
            },
            methods: {
                vModel(e) {
					//当一些方法传参处理不了时，打e看看 
                    console.log(e.target.value);
                    this.val = e.target.value
                }
            }
        })
    </script>
</body>

</html>